00247-2653 LEI   1AC

 
 
00h 24m 44.22s -27 08' 25.0" P.A. 23.00 sep 1.5 mag 15.40,19.07 Sp M5.5V
 
 
Coord 2000
00247-2653
Discov num
LEI   1
Comp
AC
Coord arcsec 2000
00 24 44.22 -27 08 25.0
Date first
1993
Date last
2010
Obs
3
Pa first
349
Pa last
23
P.A. Now (θ)
23°
Sep first
1.3
Sep last
1.5
Sep. Now (ρ)
1.5"
Mag pri
15.40
Mag sec
19.07
delta mag (ΔM)
3.67
Spectral class
M5.5V (red)
Pri motion ra
-093
Sec motion ra
-055
Pri motion dec
+603
Sec motion dec
+612
Notes
N V (See Notes, Proper motion indicates physical)
Visually invisible, K-band or other infrared star rPM=0.064 (< 0.3, Physical double)
This double is physical.
 
 
00247-2653 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 00247-2653 HEN 5 Aa,Ab 1998 1998 0 0.1 15.50 18.00 2.50
Show 00247-2653 LEI 1 AB 1993 2019 68 55 0.9 15.40 18.69 3.29
Show 00247-2653 LEI 1 AC 1993 2010 3 23 1.5 15.40 19.07 3.67 <===
Show 00247-2653 LEI 1 BC 1993 2019 69 176 0.4 18.69 19.07 0.38 Y
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
23.3
Precise sep
1.464
Constellation
Sculptor
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
00247-2653 LEI 1 AC 1994 2 353 1.5 15.40 19.07 N D 002444.25-270827.9
00247-2653 LEI 1 AC 2010 3 23 1.5 15.40 19.07 N D 002444.25-270827.9

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WDS 00247-2653 LEI 1AC : NOTES
 
 
discov_num notes refcode
LEI 1 Paper includes orbit of BC pair and estimate of mass sum. Lei2001a
HST WFPC2 photometry was also transformed to standard Johnson B and V
and Cousins R and I filters, yielding the following magnitudes for the
A, B, and C components: Lei2000
------ A ----- ------ B ----- ------ C ----- filt
17.17 +/- 0.05 20.57 +/- 0.07 21.48 +/- 0.11 B
15.35 0.04 18.68 0.06 19.07 0.07 V
13.63 0.04 16.30 0.05 16.65 0.05 R
11.66 0.04 14.01 0.05 14.43 0.05 I
Seifahrt et al. (2008) determine mass sum of BC pair to be 0.157 +/- Sef2008
0.009 Msun; mass of A 0.115 +/- 0.010 Msun. They find no sign of the
fourth component reported by Henry et al. (1999). Hen1999
Rajpurohit et al. (2012) derive Teff, log g, radius, luminosity, and Raj2012
spectral type for the components of LHS 1070 using various models.
Mean values (assuming distance = 8.8pc) are:
Teff (K) log g radius (Rsun) log(L/Lsun) spec
A: 2950 5.3 0.136 -2.92 M5.5
B: 2400 5.5 0.102 -3.44 M9.5
C: 2300 5.5 0.099 -3.55 L0
Koehler et al. (2012) derive masses for the A, B, and C components of
0.172+/-0.010, 0.077+/-0.005, and 0.071+/-0.004 Msun, respectively. Koh2012
VLTI Limb-darkened diameter 1.149 +/- 0.11 mas, LTI2003a
M = 0.631 +/- 0.031 \msun, R = 0.702 +/- 0.063 \rsun,
T = 3520 +/- 170 K.
 
 
REFERENCES
 
 
refcode metd author reference
Hen1999 Hf j Henry, T.J., Franz, O.G., Wasserman, L.H., Benedict G.F., Shelus, P.J., 1999ApJ...512..864H
Hen1999 +Xs Ianna, P.A., Kirkpatrick, J.D. & McCarthy, D.W., Jr.
Hen1999 ApJ 512, 864, 1999
Koh2012 orb j Koehler, R., Ratzka, T., & Leinert, Ch. 2012A&A...541A..29K
Koh2012 +A A&A 541, A29, 2012
Koh2012 +Si
Lei2000 Hp j Leinert, Ch., Allard, F., Richichi, A., & Hauschildt, P.H. 2000A&A...353..691L
Lei2000 A&A 353, 691, 2000
Lei2001a Si j Leinert, Ch., Jahreiss, H., Woitas, J., Zucker, S., Mazeh, T., Eckart, A., & 2001A&A...367..183L
Lei2001a +Hf Koehler, R.
Lei2001a +A A&A 367, 183-188, 2001
Lei2001a +orb (measures for AB as quoted in Koh2012)
LTI2003a not j Segransan, D., Kervella, P., Forveille, T. & Queloz, D. 2003A&A...397L...5S
LTI2003a A&AL 397, 5, 2003 .
Raj2012 - Rajpurohit, A.S., Reyle, C., Schultheis, M., Leinert, Ch., Allard, F., 2012A&A...545A..85R
Raj2012 Homeier, D., Ratzka, T., Abraham, P., Moster, B., Witte, S., & Ryde, N.
Raj2012 A&A 545, A85, 2012
Sef2008 orb j Seifahrt, A., Roll, T., Neuhauser, R., Reiners, A., Kerber, F., Kaufl, H., 2008A&A...484..429S
Sef2008 +A Siebenmorgen, R., & Smette, A.
Sef2008 A&A 484, 429, 2008
 
 
DISCOVERER
 
 
discov author
LEI Leinert, Ch., Jahreiss, H., & Haas, M.
LEI Leinert, Ch., Weitzel, N., Richichi, A., Eckart, A., & Tacconi-Garman, L.E.
LEI Leinert, Ch., Haas, M., Richichi, A., Zinnecker, H., & Mundt, R.
LEI Leinert, Ch., Jahreiss, H., Woitas, J., Zucker, S., Mazeh, T., Eckart, A., &
LEI Leinert, Ch. & Haas, M.
LEI Leinert, Ch., Richichi, A., & Haas, M.
LEI Leinert, Ch., Zinnecker, H., Weitzel, N., Christou, J., Ridgway, S.T.,
LEI Leinert, Ch., Beck, T.L., Ligori, S., Simon, M., Woitas, J., & Howell, R.R.
LEI Leinert, Ch., Haas, M., Allard, F., Wehrse, W., McCarthy, D.W., Jahreiss, H., &
LEI Leinert, Ch., Allard, F., Richichi, A., & Hauschildt, P.H.

 
 
WDS 00247-2653 LEI 1AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 00247-2653 LEI 1AC : MEASURES
 
 
No records found.

 
 
WDS 00247-2653 LEI 1AC : Virtual Eyepiece
 
 

00247-2653 A mag 15.4 Sp M5.5V 00247-2653 Ab mag 18 00247-2653 B sep 1.5 P.A. 169.90 mag 18.69 00247-2653 C sep 1.4 P.A. 21.00 mag 19.07 virtual eyepiece
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WDS 00247-2653 LEI 1AC : Aladin DSS image @ 00h 24m 44.22s -27 08' 25.0"